baber/WOPTO huggingface dataset:
Patent GB-1517583-A (GB)
Title: Frequency spectrum analysis
IPC: G01R23/16
Filed: 1975-06-25
Abstract: 1517583 Frequency spectrum analysis WESTERN ELECTRIC CO Inc 25 June 1975 [27 June 1974] 26866/75 Heading G4A To provide a signal representative of the power at a predetermined frequency of a digital signal sequence b, (1 # r # N), each digit of the sequence is multiplied by a sine and cosine signal, the argument of which depends on the frequence (as described cos (2#rK)/N-cos (2#K)/N, sine (2#rK)/N-sine (2#K)/N where K is proportional to the predetermined frequency) to derive first and second sequences of signals, each sequence being accumulated (to form signals P(K)=-##b r  (cos (2#rK)/N-cos (2#K)/N) and Q(K) =##b r  (sine (2#rK)/N-sine (2#K)/N)), squared and then added before being multiplied by a signal dependent on the frequency to provide the required power signal. As described (Fig. 2) an analogue signal is converted to digital form in a delta modulator 10 providing at each clock signal from source 22 a signal b r  equal to 0 or 1. A register 20 holds the value of K and a binary counter 21, pulsed by clock 22, provides the successive integers r, a multiplier 23 providing the value Kr. A read-only memory 32 holds the values of cos (2#rK)/N within the first quadrant, the values outside this quadrant and all the values of sine (2#rK)/N being derived from these values by logic circuitry receiving the two most significant bits of rK (i.e. the bits representing the quadrant). A detector 38 detects the state r= 1 of counter 21 and latches at this time the value -cos (2#K)/N, -sin (2#K)/N into registers 34, 35 connected to summers 36, 37 also receiving as inputs the signals cos (2#rK)/N, sine (2#rK)/N respectively. Inverters 41, 42 receiving the signals b r  act as multipliers to provide at their outputs the signals b r  (cos (2#rK)/N-cos (2#rK)/N) and b r  (sine (2#rK)/N -sine (2#K)/N) respectively, these being accumulated squared and added in units 12, 15; 13, 16; 17 respectively. A register 48 holds the values #<SP>2</SP>/ 4  sin (2#K)/N which is fed together with the output of the adder 17 to multiplier 18 to derive the power signal.
Patent GB-1035800-A (GB)
Title: Hot-working die steels
IPC: C22C38/38
Filed: 1965-06-24
Abstract: A sheet suitable for hot working dies has the following percentage composition:-  <TABS:1035800/C6-C7/1> The alloy may also contain less than 2% Ni and/or less than 0.5% in total of one or more of W, Ti, Zr and Nb.
Patent GB-224365-A (GB)
Title: Improvements in the lining of iron and steel pipes and tubes
IPC: F16L58/12
Filed: 1923-10-27
Abstract: 224,365. Stewarts & Lloyds, Ltd., and Stewart, J. G. Oct. 27, 1923. Metal pipes.-Iron and steel pipes are lined with a bituminous substance which is heated and while, in a liquid state is thickened by the admixture of a loading material, the composition being distributed over the inner surface of the pipe by rotation of the latter. Re-loading material, which is thoroughly intermixed with the butuminous substance, has such physical qualities that, under centrifugal action, it will not separate out from the bituminous substance and accumulate either towards the inside or outside of the lining. The composition comprises asphalt and either kieselguhr, slaked lime, or silica flour. The tube is heated by jets of water gas while rotating. and is cooled by water jets towards the end of the operation.
Patent GB-634351-A (GB)
Title: Improvements in and relating to rotary pumps
IPC: F04D13/14
Filed: 1947-10-07
Abstract: 634,351. Gas washers. COOPER C., HENSHAW, D. M., and HOLMES & CO., Ltd., W. C. Oct. 7, 1947, No. 26909. [Class 55 (ii)] [Also in Group XXVI] Gas is introduced through an inlet 24 and passes through a number of compartments 32 in succession, leaving through an outlet 25. Brushes 37, which are supported by members 36, are accessible through openings 34 provided with cover plates 35. Two pump units (only one of which is shown) each comprising a number of separate centrifugal pumps mounted on a common shaft and driven by a motor 17 deliver liquid by the way of pipes 44 to spray tubes 45 at the top of the compartments 32. Each compartment in provided with a liquor outlet (not shown). In addition, liquor can be drained from chambers 38 into a trough 42. An overflow outlet 49 is provided. A sealing chamber between the uppermost pump and the motor 17 is filled with liquid which can be replenished by way of an inlet 52. Specifications 331,592, 331,818, [both in Class 55 (ii)], 357,712 and 389,653, [Group XXVI], are referred to.
Patent GB-380609-A (GB)
Title: Improvements in or relating to sheet feeding apparatus
IPC: B65H9/10
Filed: 1931-09-28
Abstract: 380,609. Feeding sheets. BINGHAM, A. and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. Sept. 28, 1931, No. 26954. [Class 100 (i).] Sheets are fed to printing, cutting, &c. machines by means of positively driven rollers 4 and a pair of rollers 5 carried by an oscillating arm 6 which moves the rollers 5 into and out of contact with the roller 4, and the final feeding movement of the sheet is effected by a pivoted pawl or feed tooth 8 arranged between the rollers 5 and movable therewith to engage the rear edge of the sheet as it passes between the rollers and advance the sheet to its required position. In the machine shown the sheets are fed from the bottom of a pile 1 in a magazine 2 by an oscillating suction separator 3 which carries the leading edge of the bottom sheet between the rollers 4, 5. The invention may be applied to machines in which a sheet is cut from a strip and then passes between the rollers 4, 5. The rollers 5 may be mounted in a bracket pivoted to the arm 6. The pawl 8 is pivoted to the arm 6 and is controlled by a spring 11 and by an extension 12 which acts as a stop. The pawl 8 may be controlled by a guide which compels it to move in a straight line.
Patent GB-1088037-A (GB)
Title: Agitator shaft seal
IPC: F16K5/00
Filed: 1964-10-02
Abstract: 1,088,037. Seals. EASTMAN KODAK CO. Oct. 2, 1964 [Oct. 4, 1963], No. 26956/67. Divided out of 1,088,035. Heading F2B. Sealing means for the agitator shaft 12 of a polymerization reactor comprises housing means having three aligned cavities 92, 120 and 158 surrounding the shaft, packing material 120 in the inner cavity 92 engaging the shaft, mechanical sealing means partly forming the outer cavity 158 and separating it from the intermediate cavity 100, and fluid inlet means for the cavities 100 and 158. Liquid monomer is supplied through an inlet 170 to the cavity 100 at a pressure higher than that prevailing in the reactor and lubrication is fed through inlet 166 to the cavity 158 at a pressure higher than that of the monomer in cavity 100, the packing material 120, which may be a composition of P.T.F.E. and asbestos, being adjusted so that a slight flow of monomer into the reaction chamber is allowed. The mechanical sealing means comprises a pair of ring members 128, 130 secured to the shaft and having fingers 132, 144 engaging slots in annular members 136, 146, preferably of carbon, which are slidably sealed against the shaft by seals 138, 147 and urged into facial sealing contact with fixed seat members 112, 152 by springs 140, 148.
Patent GB-172755-A (GB)
Title: Improvements in and relating to liquid-fuel burners
IPC: F23D11/10
Filed: 1920-09-23
Abstract: 172,755. Lumb, W. Sept. 23, 1920. Air and steam pressure sprayers; nozzles for producing whirling and like sprays.-Figs. 1, 2, and 3 show alternative constructions of liquid fuel burners in which concentric supplies of oil, steam, hot air and cold air are delivered to and mixed in a spraying nozzle. In Fig. 1, oil, steam, and hot air, under pressure from pipes B', C<1>, D<1> respectively are delivered through concentric passages B, C, D formed between conical tubes A to a flared tube F secured to the boiler front G, and a supply of cold air is induced between the tube F and a cylindrical shell E surrounding the tubes A. The oil, steam and air pass from the tube F into the mixing chamber H of the spraying nozzle J. The mixing chamber H has an inlet H<1> through which hot air is drawn from the furnace. The oil supply is controlled by an adjustable threaded needle N and the steam and hot air supplies by stop-cocks. In Fig. 2, the shape of the tubes A and chambers B, C, D, are somewhat modified, and the induced air entering the shells E through an oblique branch pipe M<1>. In Fig. 3, cylindrical tubes A having tapered ends are screwed into the shell body E, and the pipes B<1>, C<1>, D<1> are arranged obliquely to the axis of the tubes. A cap L consisting of two chambers S, T is secured to the shell E so as to surround the tapered ends of the tubes A. The chamber S is provided with a compressedair connection U and the chamber T with atmospheric air inlets V controlled by a hit-and-miss regulator W. A space M<2> may be left between the cap L and the nozzle N to form an additional air inlet. The nozzle J is shown in Fig. 2 fitted with a revoluble disc P formed with inclined perforations R. Similarly fitted nozzles may be used in the constructions shown in figs. 1 and 3.
Patent GB-189430-A (GB)
Title: Improvements in or relating to shock absorbing or buffering means
IPC: F16F1/22
Filed: 1922-10-06
Abstract: 189,430. Mulot, M. C. E. Nov. 25, 1921, [Convention date]. Laminar springs.-The return movement of a deflected laminated spring to normal position is resisted by a flexible band member e carried beneath the spring leaves, and having stirrups h attached thereto and provided with rollers which bear on the master leaf a. The leaf a leaves the rollers when the spring is flattened, but on return the rollers come progressively into operation to increase the friction between the leaves, and between the leaves and the member e, which is made of ferrodo or like material with a high coefficient of friction. A band f of similar material may be interposed between the band e and the leaves, while the stirrups may be attached to the leaf a and bear on the band e.
Patent GB-362942-A (GB)
Title: Improvements in or relating to electric telegraphs
IPC: H04L25/24
Filed: 1930-09-11
Abstract: 362,942. Code telegraphy. STANDARD TELEPHONES & CABLES, Ltd. and SANDEMAN, E. K., Columbia House, Aldwych, London. Sept. 11, 1930, No. 27127. [Classes 40 (iii) and 40 (v).] The wave-form and timing of D.C. cable signals are corrected by means in which alternate signal periods are dealt with in separate circuits. The original signals a, Fig. 3, are retarded for one period and reappear as at p. Signals received in the form b, Fig. 3, from cable 21, Fig. 1, have to be restored to the form a. To this end the odd impulses are passed to the outgoing cable 22 through the circuit SA1, SV1, T1, SV3, while the even impulses pass through SA2, SV2, T2, SV4, for re-combination with the odd impulses at A. Switching-valve SV1 is operative in alternate time-elements only, being opened and closed by peaked waves e received via the shaping-device PK1 from the generator 0, which produces simple harmonic current d of the dot frequency and is synchronized (by means not shown) with the transmitter. The output impulses from valve SV1 have the form l ; they occur in odd time-elements only, and are strong or weak according as the received impulses b are positive or negative. They are applied to the valve triggerdevice T1 which is shown in Fig. 5 and described below. This device passes on to switching-valve SV3 signals m of approximately rectangular waveform, and is controlled jointly by impulses l from valve SV1 and peaked impulses e. The system T1 is stable in either of two conditions, i.e. with platecurrent flowing in one or other of valves 50, 51, Fig. 5. If valve 50 is made operative by a strong impulse applied across resistance 57 by valve SV1 it remains so until, in the absence of a strong impulse l, the valve 51 is made operative by an impulse e received via amplifier SA3. Thus the signals derived by valve SV3 from resistance 55 are of the form m. Valve SV3 is jointly controlled by the trigger apparatus T1 just described and by dot-frequency square waves g derived from SQ. Impulses arriving during the even time-elements are dealt with similarly by the parts SA2, SV2, T2, SV4. In a modification, Fig. 2 (not shown), the received signals b may modulate a carrier as at c. Stages j, k, n, o are thus introduced and filters and demodulators are required.
Patent GB-148083-A (GB)
Title: Improvements in mechanical stokers
IPC: F23K3/16
Filed: 1919-11-05
Abstract: 148,083. Revermann, G. A. W. Nov. 5, 1919. Mechanical stoking.-In a mechanical stoker of the spring-actuated radial-shovel type, means are provided whereby an even distribution of fuel is obtained on grates of different length. The spring lever a, Fig. 5, is fitted at one end with an angularly adjustable eccentric bush which engages with the power-actuated shovel shaft b, and may be turned by a spanner to vary the effective length of the lever. The other end of the lever is attached by a pin h to springs g secured at their upper ends by a pin to a bolt i mounted on a lever k pivoted at n. The lever k is supported by a rod m fulcrumed on the bracket o, which may form one side of the enclosure for the fuel trough p, and is held by the tension of the springs g against a bracket q. In stoking a long furnace, the spring lever a is adjusted to its maximum length and the pin is adjusted by the bolt i to give the requisite tension to the springs g in the position of rest r nf the shovel. For a shorter furnace, the spring lever is shortened and the bolt i adjusted so that the initial tension of the spring is the same as before. For handfiring, the handle of the lever k is depressed to. free the lever from the bracket q and the lever and rod m and spring g are then turned downwardly so as to bring the shovel into an horizontal position and secure a free opening to the grate. The trough p is hinged at s so that it may be turned downwardly to give a larger furnace opening.
Patent GB-218902-A (GB)
Title: Improvements in means for cooling milk churns and like vessels
IPC: F25D3/08
Filed: 1923-10-31
Abstract: 218,902. Marsh, T. R. Oct. 31, 1923. No Patent granted (Sealing fee not paid). Cans provided with cooling-means. - A milk churn 4 or like vessel is mounted in a cylindrical casing 5 having a side door 6 deep enough to allow the churn to be readily put in and removed, and is cooled by ice &c. contained in segmental vessels 7 supported by hooks 10 on the casing and door. The melted ice may flow to the bottom of the casing from perforations 11 in the bottoms of the ice vessels. The neck of the casing and the edge of the door are provided with rubber packing 12, 13 to prevent the entrance of air to the casing.
Patent GB-362988-A (GB)
Title: Electrodes for use in electrolysis
IPC: C25B11/02
Filed: 1930-09-12
Abstract: 362,988. Electrolysis. CARPMAEL, A., 24, Southampton Buildings, London.- (I. G. Farbenindustrie Akt.-Ges.; Frankfort-on-Main, Germany.) Sept. 12, 1930, No. 27355. [Class 41.] Electrodes.-An electrode assembly which serves as a cover for a cell consists of a number of horizontally arranged electrodes of plate form clamped together by a device arranged on the upper side out of contact with the electrolyte. The assembly shown (inverted) comprises frames 5, clamps 2 and tie-rods 3, whereby the electrode members 1 are secured. Hooks engaging the rods 3 may be provided on the frames 5 to permit removal of the members 1 without completely dismantling the apparatus. The electrodes and clamps may alternatively be tongued and grooved. Current supply members may be secured between the electrodes and the clamps. The clamps may be of the same material as the electrodes. As a modification each electrode may be secured individually.
Patent GB-748842-A (GB)
Title: Improvements relating to cleaning compositions
IPC: D06L1/04
Filed: 1953-10-07
Abstract: A paste for removing stains from textile fabrics or the hands comprises (1) a detergent, (2) a solvent for grease, (3) sodium bisulphite and (4) an acid capable of reacting with sodium bisulphite in the presence of water to liberate sulphur dioxide. The detergent may be a sulphated fatty alcohol, the grease solvent may be a mixture of white spirit, distilled pine oil and trichlorethylene, and the acid may be tartaric acid.  The composition may be filled into tubes. An example is given.
Patent GB-1276730-A (GB)
Title: Testing of liquids
Inventor: WEISSEL MANFRED
IPC: G01N21/03
Filed: 1969-05-30
Abstract: 1276730 Centrifugal separator HEINZ JANETZKI KG MASCHINENBAU 30 May 1969 27617/69 Heading B2P [Also in Division G2] A process for testing biological fluids, in particular blood, comprises retaining a transparent dish having a cover 10 and baseplate 9 between a screw-threaded ring 12 and a plate 1 horizontally mounted on the vertical shaft 2 of a motor 3, placing a drop of the fluid through a cover aperture 13, centrifuging and dyeing to form a film and then observing through a pivotable magnifying glass 8 the film illuminated by a lamp 6. The baseplate 9 may be provided with a radial scale and a grating for reading off haematocrytes and counting out white and red blood corpuscles respectively. A regulator 14 controlled by a time switch 15 governs the speed of centrifuging and a magnet-armature 19 carried by plate 1 acts via an induction coil 20 on a speed counter 21 and revolution counter 22. A speed measuring mechanism 17 and timemeasuring mechanism 18 control a circuitbreaker switch disposed in the motor-current circuit 16. The annular wall of the dish may comprise chamfered webs 23, 24, or a rubber ring slotted into recesses in the baseplate and cover.
Patent GB-761726-A (GB)
Title: Improvements in pulsatory flow jet units
Inventor: PARIS FRANCOIS GILBERT
IPC: F02K7/067
Filed: 1954-09-24
Abstract: 761,726. Jet - propulsion plant. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Sept. 24, 1954 [Sept. 29, 1953], No. 27684/54. Addition to 711,281. Class 110 (3). A pulse jet unit having an elongated combustion chamber with an exhaust nozzle discharging into a convergent-divergent thrust augmenting tube open at both ends as described and claimed in Specification 711,281, has the inlet opening of the thrust augmenting tube spaced from the end orifice of the nozzle by a distance which is between about a half and twice the diameter of the end orifice. The pulse jet comprises a combustion chamber 1 which discharges through a tubular member 3 and has an inlet aerodynamic valve 2. The member 3 discharges through a convergentdivergent tubular member 7, 4 the place of the inlet of which is spaced from the plane of the discharge nozzle by a distance i at least approximately equal to half the diameter of the discharge nozzle d. The distance i may be increased up to a maximum value of 2d. The neck between the portions 7, 4 of the convergent-divergent member should have an area s up to about 1.5 times the area of the discharge nozzle. The divergent portion 4 may have an included angle of up to 5 degrees when the pulse jet frequency is less than 100 cycles per second. A cone angle of 10 degrees may be used for frequencies between 50 and 150. For higher frequencies larger angles may be used. The convergent-divergent member 7, 4 may be supported from the pulse jet by arms 10. The divergent section 4 may comprise a first part having a cone angle coupling with the conditions referred to above, followed by a part which has a larger cone angle. A number of consecutive conical sections may be provided. In another modification, the divergence of the section 4 increases continuously. A duct formed by a casing around the pulse jet may be used to supply air to the intake of the convergent-divergent member. The length of the ejector l is preferably less than the distance travelled by sound in one second in the hot gases divided by six times the frequency of the pulsations. Specification 653,629 is referred to.
Patent GB-603421-A (GB)
Title: Improvements relating to turret lathes
IPC: B23Q1/28
Filed: 1945-10-22
Abstract: 603,421. Turning. ALEXANDER, G. H., and WRIGHT, F. Oct. 22, 1945, No. 27693. [Class 83 (iii)] A lathe turret having spring-loaded frictional means for clamping the turret to its slide is provided with means for releasing the turret arranged to co-operate with a ramp so that withdrawal of the slide from its working position effects the release of the clamping means. The turret a is carried by a rotatable hollow post c on a slide b. An annular portion d on the underface of the turret bears on to a flat face of the slide and the post carries an abutment ring g between which and the lower face of a cap h a spring or springs i are arranged. The springs press the cap on to the top of the turret and the latter on to the slide to clamp the turret against rotation. A rod o extends within the hollow post and bears at its upper end against a stop on the cap, while the lower end is adapted to engage a ramp p when the turret is retracted for an indexing movement. The rod is thus forced upwardly against the spring pressure to free the turret for rotation.
Patent GB-463960-A (GB)
Title: Improvements in or relating to fastener assorting and delivering mechanism
IPC: A43D71/00
Filed: 1935-10-08
Abstract: 463,960. Nailing. BRITISH UNITED SHOE MACHINERY CO., Ltd., and BARTON, W. A. Oct. 8, 1935, No. 27716. [Class 89 (iii)] A fastener assorting and delivering mechanism of the character described in Specification 28474/10, [Class 17 (i)], particularly for use in a heel seat lasting machine designed to insert an uneven number of tacks, one of which is inserted along the virtual axis about which the wipers move, as described in Specification 440,329, is so arranged that delivery of a tack from one of the raceways is automatically prevented during one of the two separating movements which the separator slide makes in each machine cycle. A block 3 with a tapered finger 9 is mounted on the separator slide 1, and is held to the right by a spring 27. When the slide makes its first separating movement to the left, the block 3 is locked to it by a latch 19 on the block, so that the finger 9 masks the right-hand delivery slot 5 and prevents delivery of a tack from the right-hand raceway 7. When the slide 1 has returned to the right, the delivery slide 47 of the mechanism is moved to the right, and engages a screw 45 so as to rock a lever 41 to disengage the latch 19 from the separator slide. Consequently, the latter makes its second separating movement to the left without moving the block 3, and the slot 5 is free to take a tack from the right-hand raceway 7. Specification 391,451 also is referred to.
Patent GB-915195-A (GB)
Title: Printable tapes
IPC: C09J7/21
Filed: 1961-07-31
Abstract: 915,195. Printable pressure-sensitive adhesive tapes. NORTON CO. July 31, 1961 [Aug. 29, 1960], No. 27734/61. Class 140. A printable tape comprises a flexible backing member having a pressure-sensitive adhesive coating on one side and a backsize coating bonded to the other side consisting essentially of (i) a terpolymer which is the reaction product of a mixture of 37 to 42 parts by weight butadiene, 18 to 38 parts by weight acrylonitrile, and 22 to 42 parts by weight styrene, and (ii) an inert particulate filler in an amount of from 5 to 40 parts by weight of the coating solids. A pigmented film coating, e.g. a vinyl resin dispersion of coloured pigments, may be present between the backing member and a transparent backsize coated containing 5 to 20 parts by weight of a particulate silica gel filler. The backing member may be paper, which may contain a butadiene-acrylonitrile saturant. The particulate filler may be titanium dioxide having a particle size of 0.3 microns, or silica gel having a surface area of at least 20 square metres per gram. Specifications 427,702, 514,402, 644,291 and 790,155 are referred to.